ASTROSAT CZTI

Data Quality Report

Orbit 10816

Creation date: 2024-06-27T16:04:08.441908
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_086T01_9000001568_10816cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10816cztM0_level2_quad_clean.evt
Size (bytes)276,575,04024,572,160
Size263.8 MB 23.4 MB
Events in quadrant A3,659,344121,024
Events in quadrant B1,617,753164,117
Events in quadrant C1,058,638165,106
Events in quadrant D1,901,537146,269

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01229923
B0615522
C044013
D070775

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2021120859.772390%
B202023911.831683%
C2023331.631241%
D202323511.616411%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 2304 2024 868 868 37.67% 42.89%
B 2304 2024 86 86 3.73% 4.25%
C 2304 2025 0 0 0.00% 0.00%
D 2304 2025 141 141 6.12% 6.96%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 5 2856537 67510.0 196 191 42.3
A 15 174 28302 664.41 196 191 42.3
A 13 251 15244 355.78 196 191 42.3
B 4 239 462543 8633.3 266 260 53.5
B 0 219 51673 960.16 266 260 53.5
B 0 182 28020 518.43 266 260 53.5
C 8 128 2564 35.41 269 269 64.8
C 5 207 2080 27.94 269 269 64.8
C 13 61 2007 26.82 269 269 64.8
D 10 199 294406 4474.08 254 245 65.7
D 2 136 215820 3278.82 254 245 65.7
D 8 195 159503 2422.25 254 245 65.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter